DIN EN 933-9-2013 Tests for geometrical properties of aggregates - Part 9 Assessment of fines - Methylene blue test German version EN 933-9 2009+A1 2013《集料几何性能试验 第9部分 精细评定 亚甲蓝试验 德文.pdf

《DIN EN 933-9-2013 Tests for geometrical properties of aggregates - Part 9 Assessment of fines - Methylene blue test German version EN 933-9 2009+A1 2013《集料几何性能试验 第9部分 精细评定 亚甲蓝试验 德文.pdf》由会员分享，可在线阅读，更多相关《DIN EN 933-9-2013 Tests for geometrical properties of aggregates - Part 9 Assessment of fines - Methylene blue test German version EN 933-9 2009+A1 2013《集料几何性能试验 第9部分 精细评定 亚甲蓝试验 德文.pdf（17页珍藏版）》请在麦多课文档分享上搜索。

1、July 2013 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 9

2、1.100.15!%English version EN 933-9:2009+A1:2013,English translation of DIN EN 933-9:2013-07Prfverfahren fr geometrische Eigenschaften von Gesteinskrnungen Teil 9: Beurteilung von Feinanteilen Methylenblau-Verfahren;Englische Fassung EN 933-9:2009+A1:2013,Englische bersetzung von DIN EN 933-9:2013-07

3、Essais pour dterminer les caractristiques gomtriques des granulats Partie 9: Qualification des fines Essai au bleu de mthylne;Version anglaise EN 933-9:2009+A1:2013,Traduction anglaise de DIN EN 933-9:2013-07SupersedesDIN EN 933-9:2009-10www.beuth.deDocument comprises 17 pagesIn case of doubt, the G

4、erman-language original shall be considered authoritative.07.13 DIN EN 933-9:2013-07 2 A comma is used as the decimal marker. National foreword This document (EN 933-9:2009+A1:2013) has been prepared by Technical Committee CEN/TC 154 “Aggregates“ (Secretariat: BSI, United Kingdom). The responsible G

5、erman body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-03-13 AA Gemeinschaftsarbeits-ausschuss Gesteinskrnungen; Prfverfahren, Petrographie, Probenahme und Przision. Amendments This standard differs from DIN EN

6、933-9:2009-10 as follows: a) Clause 7 “Preparation of test portions” has been completely revised; b) in Subclause 8.2 “Preparation of suspension”, the word “dried” has been deleted (1st sentence); c) in Subclause 10.2 “Required data”, item h) “pre-drying (if any)” has been added. Previous editions D

7、IN EN 933-9: 1998-12, 2009-10 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 933-9:2009+A1 April 2013 ICS 91.100.15 Supersedes EN 933-9:2009 English Version Tests for geometrical properties of aggregates - Part 9: Assessment of fines - Methylene blue test Essais pour dterminer les caractristiq

8、ues gomtriques des granulats - Partie 9 : Qualification des fines - Essai au bleu de mthylne Prfverfahren fr geometrische Eigenschaften von Gesteinskrnungen - Teil 9: Beurteilung von Feinanteilen-Methylenblau-Verfahren This European Standard was approved by CEN on 12 June 2009 and includes Amendment

9、 1 approved by CEN on 12 February 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such

10、 national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own

11、language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Gr

12、eece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUN

13、G Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 933-9:2009+A1:2013: E EN 933-9:2009+A1:2013 (E) 2 Contents Page Foreword . 3 1 Scope 5 2 Normative references . 5 3 Terms a

14、nd definitions . 5 4 Principle . 6 5 Reagents 6 6 Apparatus 6 7 Preparation of test portions . 7 8 Procedure 7 8.1 Description of the stain test . 7 8.2 Preparation of suspension . 7 8.3 Determination of the quantity of dye adsorbed . 8 9 Calculation and expression of results 8 10 Test report . 9 10

15、.1 General . 9 10.2 Required data 9 10.3 Optional data . 9 Annex A (normative) Procedure for the determination of the methylene blue value (MBF) of the 0/0,125 mm fraction 10 Annex B (informative) Test of conformity in relation to a specified MB value . 11 Annex C (normative) Preparation of 10 g/l m

16、ethylene blue solution 12 Annex D (normative) Procedure for the determination of the methylene blue value of kaolinite (MBK) . 14 Annex E (informative) Example of a test data sheet . 15 DIN EN 933-9:2013-07EN 933-9:2009+A1:2013 (E) 3 Foreword This document (EN 933-9:2009+A1:2013) has been prepared b

17、y Technical Committee CEN/TC 154 “Aggregates”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2013, and conflicting national standards shall be wi

18、thdrawn at the latest by October 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes !EN 933-9:2009.“ This

19、document includes Amendment 1 approved by CEN on 2013-02-12. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. This Standard forms part of a series of tests for geometrical properties of aggregates. Test methods for other properties of aggregates wi

20、ll be covered by parts of the following European Standards: EN 932, Tests for general properties of aggregates EN 1097, Tests for mechanical and physical properties of aggregates EN 1367, Tests for thermal and weathering properties of aggregates EN 1744, Tests for chemical properties of aggregates E

21、N 13179, Tests for filler aggregate used in bituminous mixtures The other parts of EN 933 will be: Part 1: Determination of particle size distribution Sieving method Part 2: Determination of particle size distribution Test sieves, nominal size of apertures Part 3: Determination of particle shape Fla

22、kiness index Part 4: Determination of particle shape Shape index Part 5: Determination of percentage of crushed and broken surfaces in coarse aggregate particles Part 6: Assessment of surface characteristics Flow coefficient for coarse aggregates Part 7: Determination of shell content Percentage of

23、shells in coarse aggregates Part 8: Assessment of fines Sand equivalent test Part 10: Assessment of fines Grading of fillers (air jet sieving) DIN EN 933-9:2013-07EN 933-9:2009+A1:2013 (E) 4 According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following coun

24、tries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Po

25、land, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. DIN EN 933-9:2013-07EN 933-9:2009+A1:2013 (E) 5 1 Scope This standard describes the reference method used for type testing and in cases of dispute for the determination of the methylene blue value

26、 of the 0/2 mm fraction in fine aggregates or all-in aggregates (MB). It also describes the reference method for the determination of the methylene blue value of the 0/0,125 mm fraction (MBF) in Annex A. For other purposes, in particular factory production control, other methods may be used provided

27、 that an appropriate working relationship with the suitable reference method has been established. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the lates

28、t edition of the referenced document (including any amendments) applies. EN 932-2, Tests for general properties of aggregates Part 2: Methods for reducing laboratory samples EN 932-5, Tests for general properties of aggregates Part 5: Common equipment and calibration 3 Terms and definitions For the

29、purposes of this document the following terms and definitions apply. 3.1 subsample sample obtained by means of a sample reduction procedure 3.2 test portion sample used as a whole in a single test 3.3 fines particle size fraction of an aggregate which passes the 0,063 mm sieve 3.4 particle size frac

30、tion fraction of an aggregate passing the larger of two sieves and retained on the smaller NOTE The lower limit can be zero. 3.5 constant mass successive weighings after drying at least 1 h apart not differing by more than 0,1 % NOTE In many cases constant mass can be achieved after a test specimen

31、has been dried for a pre-determined period in a specified oven at (110 5) C. Test laboratories can determine the time required to achieve constant mass for specific types and sizes of sample dependent upon the drying capacity of the oven used. DIN EN 933-9:2013-07EN 933-9:2009+A1:2013 (E) 6 4 Princi

32、ple Increments of a solution of methylene blue are added successively to a suspension of the test portion in water. The adsorption of dye solution by the test portion is checked after each addition of solution by carrying out a stain test on filter paper to detect the presence of free dye. When the

33、presence of free dye is confirmed the methylene blue value (MB or MBF) is calculated and expressed as grams of dye adsorbed per kilogram of the size fraction tested. NOTE A conformity check, adding a single quantity of dye solution equivalent to a specified limiting value and which may be used as pa

34、rt of a production control process, is described in Annex B. 5 Reagents 5.1 Dye solution, solution of standard or technical quality methylene blue, (10,0 0,1) g/l (see Annex C). The maximum period of use of the solution shall be 28 days. It shall be stored away from light. 5.2 Distilled or demineral

35、ised water. 5.3 Kaolinite, of known methylene blue value (MBK) (see Annex D). NOTE Kaolinite of MBKvalue between 1 g and 2 g per 100 g of kaolinite is preferable in order to avoid excessive use of dye. 6 Apparatus All apparatus shall conform to the general requirements of EN 932-5. 6.1 Burette, with

36、 capacity of either 100 ml or 50 ml and graduation of either 1/10 ml or 1/5 ml, or one 5 ml and one 2 ml micro-pipette. 6.2 Filter paper, quantitative and ash-free ( 0,010 %); 95 g/m2; thickness 0,20 mm; filtration speed 75 s; pore size 8 m. 6.3 Glass rod, length 300 mm; diameter 8 mm. 6.4 Impeller

37、agitator, capable of controlled variable rotation rates up to (600 60) min-1with three or four impeller blades of (75 10) mm diameter. NOTE Alternative types of mixer can be used if it can be shown that results obtained agree with results produced using an impeller agitator as specified above. 6.5 B

38、alance, readable to 0,1 % of the mass to be weighed. 6.6 Stopwatch or stopclock, readable to 1 s. 6.7 Test sieve, 2 mm aperture, with guard sieve (if necessary). 6.8 Beaker, glass or plastic, capacity about 1 l or about 2 l. 6.9 Flask, glass, capacity 1 l. 6.10 Ventilated oven, thermostatically cont

39、rolled to maintain a temperature of (110 5) C. 6.11 Thermometer, readable to 1 C. DIN EN 933-9:2013-07EN 933-9:2009+A1:2013 (E) 7 6.12 Spatula. 6.13 Desiccator. 7 Preparation of test portions !The laboratory samples shall be reduced in accordance with EN 932-2 to produce two subsamples, each contain

40、ing at least 200 g of 0/2 mm particle size. Sieve each subsample on a 2 mm sieve protected if necessary by a guard sieve, and using a sieve brush to ensure effective separation and collection of all particles in the 0/2 mm fraction. Discard any particles retained on the 2 mm sieve. The subsamples ma

41、y be pre-dried at less than 45 C in order to facilitate the sieving operation. Weigh one of the subsamples as M. Dry it to constant mass, then weigh it again as M. Determine and record the water content of this subsample as W (%) = 100x(M - M)/M. Discard this subsample. NOTE The determination of the

42、 water content can be achieved by other means than drying in a ventilated oven, such as drying in a microwave for example. Take the other subsample and, if necessary, achieve further reduction in accordance with EN 932-2 to obtain a test portion of mass at least 200x(1 + W/100) g. The mass of the te

43、st portion shall be larger than 200x(1 + W/100) g but not of an exact predetermined value. Weigh the test portion as M0 and determine its dry mass M1 to the nearest 1 g according to the following: M1 = M0 / (1+ W/100) (1)“ 8 Procedure 8.1 Description of the stain test After each injection of dye, th

44、e stain test consists of taking a drop of suspension by means of the glass rod and depositing it on the filter paper. The stain which is formed is composed of a central deposit of material, of a generally solid blue colour, surrounded by a colourless wet zone. The amount of drop taken shall be such

45、that the diameter of the deposit is between 8 mm and 12 mm. The test is deemed to be positive if, in the wet zone, a halo consisting of a persistent light blue ring of about 1 mm is formed around the central deposit. NOTE As the end-point is approached, the halo will appear, but can then disappear a

46、gain, because the clay minerals can take some time to complete their adsorption of the dye. For this reason the end-point is confirmed by repeating the stain test at 1 min intervals for 5 min without adding more dye solution. 8.2 Preparation of suspension Place (500 5) ml of distilled or demineralis

47、ed water in the beaker and add the !deleted text“ test portion stirring well with the spatula. Stir the dye solution (see 5.1) or alternatively mix it thoroughly. Fill the burette with dye solution and return the stock of dye solution to a dark place. Set the agitator to a speed of 600 min-1and posi

48、tion the impeller about 10 mm above the base of the beaker. DIN EN 933-9:2013-07EN 933-9:2009+A1:2013 (E) 8 Switch on the agitator and start the stopwatch, agitating the contents of the beaker for 5 min at (600 60) min-1and subsequently (see 8.3) agitate continuously at (400 40) r/min for the remainder of the test. If insufficient fines are present in the test portion to obtain a halo, kaolinite should be added together with additional dye solution as foll